import java.util.concurrent.atomic.AtomicInteger;

public class Test1 {
    static AtomicInteger count = new AtomicInteger(0); ;
    public static void main(String[] args) throws InterruptedException {
       Thread t1 = new Thread(()->{
           for (int i = 0; i < 5000 ; i++) {
               //count ++ ;
               count.getAndIncrement();
//               // ++ count
//               count.incrementAndGet() ;
//               // count-- ;
//               count.getAndDecrement();
//               // -- count
//               count.decrementAndGet();
           }
       });
        Thread t2 = new Thread(()->{
            for (int i = 0; i < 5000 ; i++) {
                count.getAndIncrement() ;
            }
        });
        t1.start();
        t2.start();
        t1.join();
        t2.join();
        System.out.println(count);
    }


}








